Jack head assembly



Feb. 2, 1965 R. H. RICKERT .mcx HEAD ASSEMBLY 2 Sheets-Sheet 1 Filed Dec. 6, 1961 Ronald H. Rickerf INVENTOR.

Feb. 2, 1965 R. H. RICKERT 3,168,286

JACK HEAD ASSEMBLY Filed Dec. 6, 1961 2 Sheets-Sheet 2 Ronald H. Rickert *T I 2/ INVENTOR.

,8 I BY Maw United States Patent 3,163,286 JACK HEAD ASSEMBLY Ronald H. Rickert, P.0. Box 21, Dimmitt, Tex. Filed Dec. 6, 1961, Ser. No. 157,462 2 Claims. (Cl. 254-134) This invention generally relates to new and useful improvements in fluid power jacks for use particularly, although not necessarily, in tractor repair shops or establishments and has for its primary object to provide, in a manner as hereinafter set forth, novel means whereby the usual hydraulic pumps of certain tractors may be expeditiously removed, taken to a workbench, repaired and then reinstalled with a minimum of labor.

Another very important object of the present invention is to provide a mobile fluid power jack of the aforementioned character which embodies a removable bracket or head of a unique construction which is adapted to be secured to the hydraulic pump to be repaired and remain thereon until the entire operation has been completed.

Other objects of the invention are to provide an improved fluid power jack of the character described which will be comparatively simple in construction, strong, durable, compact, of light weight and which may be manufactured at low cost.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a view in side elevation of the wheelless front end of an elevated tractor with a portion broken away, showing a jack in accordance with the present invention secured to the usual hydraulic pump thereof;

FIGURE 2 is a cross-sectional view through the tractor, showing the jack in front elevation;

FIGURE 3 is a perspective view of the jack per se; and

FIGURE '4 is an elevational view of the top portion of the device with a portion broken away in section.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a vertical hydraulic cylinder or barrel 5 of suitable dimensions. The cylinder 5 is supported in an elevated position by means comprising three downwardly divergent legs 6 which are preferably of angle iron. The upper ends of the legs 6 are affixed at 7 to the upper portion of the cylinder 5, as by welding. Extending between the lower end portions of the legs 6 and an intermediate portion of the cylinder 5 are braces or struts 8 which also are preferably of angle iron. Suitable casters 9 are mounted beneath the outer ends of the legs 6.

Mounted for vertical reciprocation in the cylinder 5 and projecting upwardly therefrom is a fluid actuated rod or ram 10. The rod 10 may be provided on its lower end with a suitable piston (not shown) for operation in the cylinder 5. A suitable source of fluid under pressure is connected at 11 to the lower end portion of the cylinder 5.

As illustrated to advantage in FIGURE 4 of the drawing, the rod 10 includes a threaded upper end portion 12. Screwed on the upper end portion 12 of the rod 10 is a tubular coupling or the like 13 of suitable metal. The coupling 13 provides means for detachably securing a head assembly 14 on the upper end of the rod 10.

The head 14 includes a generally U-shaped metallic bracket 15 having vertical arms including apertured end portions which are twisted 90 degrees, said end portions being indicated by reference numeral 16. Aflixed to the bight portion 17 of the bracket 15 and depending therefrom is a sleeve 18 which slidably receives the coupling 13. The members 13 and 18 are provided with diamet- "ice rically opposite openings or holes 19 and 20, respectively, which are brought into registry for receiving a pin 21 for removably securing the head 14 on the rod 10. The pin 21 may be provided with a cotter key 22 to prevent accidental removal of said pin.

It is thought that the use of the device will be readily apparent from a consideration of the foregoing. In FIG- URE l of the drawing, reference numeral 23 designates generally the jacked-up front end portion of a conventional tractor from which the front wheels have been removed and which is equipped with a hydraulic pump 24 which is to be repaired. Briefly, a pair of the usual pump bolts 25 are removed. The jack is then positioned beneath the pump 24 and adjusted to align the openings 26 in the bracket 15 with the openings or bores from which the bolts 25 have been removed. The bolts 25 are then reinserted for securing the pump 24 on the jack. The rest of the bolts 25 are then removed for detaching the pump 24 from the tractor, said pump now being mounted on the jack. The jack with the pump thereon may then be rolled on the casters 9 to the desired location such as a workbench. The pin 21 is then removed to permit the pump 24 with the bracket 15 thereon to be lifted off the jack in order that the repairing operation may proceed. Or, the pump may be left on the jack if desired. When the repair work has been completed the bracket 15, still attached to the pump, is replaced on the coupling 13 carried by the stem or rod 10', after which the pin 21 may again be inserted. The jack with the pump thereon is then returned to the tractor and said pump is reinstalled in an obvious manner, the foregoing procedure being substantially reversed.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. For removably mounting, supporting and transporting a hydraulic tractor pump assembly or the like on a wheeled jack, a jack head assembly comprising a onepiece generally U-shaped bracket including a bight portion and a pair of vertically extending arms connected thereto, the end portions of said arms being apertured and twisted a cylindrical coupling adapted to be threaded on a jack, a vertically dependent cylindrical sleeve aflixed to the underside of the bight portion of the bracket and telescopically and rotatably receiving the coupling, said coupling being engaged with the bight portion of the bracket for transmitting the weight of a load on the bracket to the jack, and means detachably securing the sleeve on the coupling.

2. A jack head assembly in accordance with claim 1, said coupling and said sleeve having diametrically opposite registering openings therein, said means including a headed pin removably inserted in the registering openings.

References Cited in the file of this patent UNITED STATES PATENTS 1,907,846 Mandernack May 9, 1933 2,215,146 Compano Sept. 17, 1940 2,240,724 Stoehr May 6, 1941 2,390,022 Wood Nov. 27, 1945 2,540,578 Hall et a1. Feb. 6, 1951 2,549,321 Marshall et al. Apr. 17, 1951 2,707,819 Silliman May 10, 1955 2,814,099 Knittel Nov. 26, 1957 2,921,379 Sealander Jan. 19, 1960 

1. FOR REMOVABLY MOUNTING, SUPPORTING AND TRANSPORTING A HYDRAULIC TRACTOR PUMP ASSEMBLY OR THE LIKE ON A WHEELED JACK, A JACK HEAD ASSEMBLY COMPRISING A ONEPIECE GENERALLY U-SHAPED BRACKET INCLUDING A BIGHT PORTION AND A PAIR OF VERTICALLY EXTENDING ARM CONNECTED THERETO, THE END PORTIONS OF SAID ARMS BEING APERTURED AND TWISTED 90*, A CYLINDRICAL COUPLING ADAPTED TO BE THREADED ON A JACK, A VERTICALLY DEPENDENT CYLINDRICAL SLEEVE AFFIXED TO THE UNDERSIDE OF THE BIGHT PORTION OF THE BRACKET AND TELESCOPICALLY AND ROTATABLY RECEIVING THE COUPLING, SAID COUPLING BEING ENGAGED WITH THE BIGHT PORTION OF THE BRACKET FOR TRANSMITTING THE WEIGHT OF A LOAD ON THE BRACKET TO THE JACK, AND MEANS DETACHABLY SECURING THE SLEEVE ON THE COUPLING. 